Sidelink Resource Allocation via Zone Occupancy Reports
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Solution Overview
Problem
Current wireless communication networks face challenges in efficiently managing resource allocation for sidelink communications between Mode 3 and Mode 4 UEs, leading to resource collisions and poor network performance due to the lack of effective coexistence mechanisms.
Innovation Solution
Implementing a system where user devices measure resource pool occupancy and generate zone occupancy reports, allowing base stations to create zonal area resource usage maps, and enabling Mode 3 UEs to broadcast assigned resources to Mode 4 UEs to avoid resource conflicts, while switching Mode 4 UEs to Mode 3 configuration based on predefined criteria for optimized resource management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If Mode 3 and Mode 4 UEs share the same resource pool for sidelink communications, then resource utilization efficiency is improved, but resource collisions increase leading to poor network performance
Solution Approach 1:
The patent divides the coverage area into multiple geographical zones and maps each zone to a specific resource pool. Mode 3 UEs broadcast their assigned resources zone-by-zone, allowing Mode 4 UEs to selectively avoid collisions in each zone. This segmentation approach enables both modes to share resources efficiently while maintaining reliability through localized resource separation.
2Loss of energy
If Mode 4 UEs autonomously select resources without base station coordination, then signaling overhead is reduced, but resource collisions with Mode 3 UEs increase
Solution Approach 1:
The patent implements partial base station coordination where Mode 3 UEs broadcast their assigned resources to Mode 4 UEs in a zone-by-zone manner. This partial information exchange is sufficient for Mode 4 UEs to avoid collisions without requiring full base station control or excessive signaling, achieving a balance between autonomous operation and collision avoidance.
3Reliability
If base stations manage resource allocation for all UEs, then resource collision avoidance is improved, but signaling overhead and network complexity increase
Solution Approach 1:
The patent implements local quality by having base stations manage resource allocation on a per-zone basis rather than globally. Each base station broadcasts resource information only for its specific geographical zone, reducing signaling overhead and network complexity while maintaining effective collision avoidance within each localized area.
4Measurement precision
If Mode 4 UEs continuously monitor resource occupancy, then resource collision detection is improved, but device complexity and energy consumption increase
Solution Approach 1:
The patent applies preliminary action by having Mode 3 UEs broadcast their assigned resources in advance before Mode 4 UEs need to select resources. This allows Mode 4 UEs to receive resource information proactively and make autonomous selections without continuous monitoring, reducing device complexity and energy consumption while maintaining accurate collision detection.
Data Source
AI summary
A transceiver for a wireless communication system for serving a plurality of user equipments is provided. A coverage area of the transceiver includes one zone or a plurality of zones, each zone having mapped thereto a resource pool. The transceiver is configured to signal to less than all user equipments assigned to a certain zone to return to the transceiver a zone occupancy report for the certain zone. The zone occupancy report indicates an occupancy status of the resource pool mapped to the certain zone.